Reversible lock for hangar-doors.



C. C. TOMKINSON.

REVERSIBLE LOCK FOR HANGAR DOORS.

APPLICATION FILED ocr. 19. new.

Pmnd sept. 10,1918.

2 SHEETS-SHEET I.

1m: www., ums co.Pnum-L1mo, wAsnmamn. u4 c.

(2. C. TMKiNSON. REVERSIBLE LOCK FOR HANGAR DOORS.

APPLICATION FILED 0CT.19,19H.

Patented Sept. 10, 1918.

2 SHEETS-SHEET 2.

@Hom/16135 CHARLES c. ToMKrNsoN, 0E RLAINEIELD, JERSEY, nssrenon To J. EDWARD OGDEN, or MOUNTAINVILLE, NEW YORK.

REVERSIBLE noon Een Hansen-noces.

Application filed October 19, 1917. Serial No. 197,431.`

To @ZZ whom t may concern Be itv known that I, CrninLEsC. TOMKIN- soN, citizen of the United States, and a residentlof Plainfield, county of Union,and State of Newdersey, have invented certain new and useful Improvements in Reversi ble Locks for Hangar-Doors, of which the Y following is a specification, reference being had to the accompanying drawings, forming a part thereof. f

My invention relates to improvements in longitudinally movable doors, and its object is Ato provide a mechanism for holding such doors against movement in both direct-ions or against movement in one direction or the other.` More particularly it ref lates to a mechanism applied to a pair of such doors movable in a common plane which 1s so arranged that both of said doors may be locked against movement in either direction, and that when released to mgove in either direction they are locked against movement in the opposite direction.

A further object of this invention is to combine such a locking mechanism with apparatus :for moving thevdoo-rs in the desired direction. A still further-object is to provide a simple device for controlling both the locking mechanism and the doormoving apparatus.

In order that my invention may be thoroughly understood, l will now proceed to describe the same in the following specification, and then point out the novel features thereof in appended claim.

Referring to the drawings:

Figure 1 is a front elevation of a hanger with a pair of doors provided with mechanism which embodies this invention.

Fig. 2 is a front elevation of a part of one of the doors on a larger scale with myA invention applied thereto.

Fig. 3 is a sectional end elevation of the parts shown in Fig. 2.

F 4 is a sectional end elevation of the control lever and connected parts.

Fig. 5 is a plan view of certain 0f the parts shown in Figs. 2 and 3.

Fig. 6 is a diagrammatic view of certain electrical and mechanical connections between the doors and an electric winch.

Like characters are designated by corresponding parts in all the figures.

10 designates a building construction which in this case is hangar for dirigible s'pecifwatidn of Letters Patent.

Patented Sept. itl, 1918.

balloons. llyd'esignates tracks or rails laid across the front of this building, and 12 are overhead guides supported by the` building above and parallel with the tracks A11.I

The doors are designated by 13 and 14. These are supported upon the journals 15 of fiange'd wheels 16 on the tracks 11. 17 17 are wheels mounted on vertical shafts projecting downwardly from the bottom of the door structures and bearing upon the inner surfaces of the rails 1118-18 aresiniilar wheels mounted on shafts projecting. upwardly from the top of the door structures and bearing upon. the guides 12 above thedoors.

On each of the journals 15 is affixed a ratchet wheel 20 above each of which are providedl two pawls 2l and 22 on opposite sides of Jthe journals 15, drawn into engagementnwith thev ratchet wheel by springs such as 23 connected with the pawls above their pivots. These pawlswhen in engagement with' the ratchet wheel lock the journal against rotation and therefore lock the door against movement in either direction.k The upperends. 24 and l5-of the pawls are extended upwardly alongside of a longitudinally :movable horizontal mounted in braclets27 on which are affixed stops or pawl strips 28 and 29 outside of the pawl extensions 24 and 25.

30 is a control lever pivoted at 31 and connected with rod 26 at 32. At the side of the hangar is a winch 33 having a rope drum 34. This winch may be reversible and driven by a reversible electro-motor 35. 36 is a rope or cable running from one side of the winch drum to the adjacent lower corner of the door 14 to which it is detachably affixed. Another rope or cable 37 runs from the other side of the winch drum under a sheave 38 to the opposite lower corner of the door 14. Extensions 36A and 37A of the ropes 36 and 37 may be similarly connected with the lower corners of door 13, a sheave 38A being provided for the rope extension 37A.

When an electric motor is used to actuate the winch, a reversing switch 40 may be associated with the control lever 30 connected with the motor by suitable conductors as shown, so that when the lever is moved in one direction or the other, the motor will drive the winch in the desired direction.

The operation of this apparatus is as foltension of rope 36.

lows: when the control lever is in its central position, the door on which itis mounted will be locked against movement in either direction by the pawls 21-22. Now if the lever 30 on door 14 is moved to the' right, the rod 26 will be movedin a corresponding direction, and all of the stops or pawl trips 28 thereon will move all of the pawls 21 out of engagement with their respecting ratchet wheels 20. The door 14 will then be released to be moved to the right but will be locked against movement in the oppositeV direction by the pawls 22. The door 14 may then be pulled over to the right by the rope 36. l

If two doors are used to close a structure such as the hangar shown, this will open halfof the door opening. IVhen the door 14 has reached the desired position the control lever is brought to its central position to allow the pawls 21 to again engage their respective ratchet wheels to lock the door against further movement. Now the control lever on door 13 may be moved to the left' and this door moved to the left by the eX- By reversing these operations the doors may be closed.

When the winch is driven by a reversible electric motor 35 and reversing switches used in connection with the control levers, a certain amount of lost motion may be provided so that the first movement of a control lever will release ythe pawls and a further movement of the control lever in the same direction will close the motor circuits through thereversing switch to cause'the motor to rotate the winchV drawn in the direction to smaller size whether mounted to rest upony wheels as shown, or-hung from wheels running upon overhead tracks. I do not therefore intend to limit myself to the particular form or construction shown and described,-

b'ut in fact intend no limitations other than those imposed by the appended claim.

What I claim is:

A horizontally movable door, a heel for supporting the door, a latch for preventing the rotation of said wheel in one direction, another latch for preventing the rotation of said wheel in the other direction, a motor for moving the door in either direction, a reversing switch for controlling the motor, and means actuated by the movement of said reversing switch in one direction for releasing one of said latches, and in the other direction for releasing the other latch.

In witness whereof, I `have hereunto set my hand this 16th day of October, 1917.

CHARLES C. TOMKINSON.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

' Washington, '.D. C.

eoy 

